8 : 8 co-ordination of CsCl is found to change into 6 : 6 co-ordination on:

JEE Main Chemistry question

Not in JEE Main or NEET syllabus

8 : 8 co-ordination of is found to change into 6 : 6 co-ordination on:

(A)Applying pressure
(B)Increasing temperatureCorrect
(C)Both (A) and (B)
(D)None of these

Answer: (B)

Solution

Raising the temperature expands the lattice and increases thermal/ionic vibration, destabilising the close 8:8 (CsCl-type, bcc) coordination in favour of the more open 6:6 (NaCl-type, rock-salt) coordination — this is the well-known

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Question ID VK-141730